I have been using large regular cones. Someone told me I should use only the self-supporting cones for accuracy. Is this correct?
The large regular Orton cones are as accurate as the self-supporting cones provided the regular cones are slated 8 degrees from vertical. The correct slant is built into the base of each type of cone. But it is possible to alter the slant of the regular cone in the cone plaque.
A cone that is mounted at an angle greater than 8 degrees will bend at too low a temperature; a cone mounted at an angle less than 8 degrees will bend at too higher a temperature.
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